Perhaps you should try some spelling variations:
"modified response optimization algorithms" » "modified response optimisation algorithm", "modified response estimation algorithms", "modified response estimation algorithm"
"modified discursive convolution algorithms" » "modified discursive construction algorithms", "modified discursive evolution algorithm", "modified discursive solution algorithm"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified response optimization algorithms") or ("modified discursive convolution algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified response optimization algorithms") OR ("modified discursive convolution algorithms")).
• Removing quotes may allow a broader search: (( modified response optimization algorithms ) or ( modified discursive convolution algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified response optimization algorithms") or ("modified discursive convolution algorithms"))*.